Zobrazeno 1 - 10
of 590
pro vyhledávání: '"Kraaikamp"'
Autor:
Collier, Hannah, Hayes, Laura A., Purkhart, Stefan, Krucker, Säm, Ryan, Daniel F., Polito, Vanessa, Veronig, Astrid M., Harra, Louise K., Berghmans, David, Kraaikamp, Emil, Dominique, Marie, Dolla, Laurent R., Verbeeck, Cis
Aims: This paper aims to demonstrate the importance of short-exposure extreme ultraviolet (EUV) observations of solar flares in the study of particle acceleration, heating and energy partition in flares. This work highlights the observations now avai
Externí odkaz:
http://arxiv.org/abs/2411.09319
We define two types of the $\alpha$-Farey maps $F_{\alpha}$ and $F_{\alpha, \flat}$ for $0 < \alpha < \tfrac{1}{2}$, which were previously defined only for $\tfrac{1}{2} \le \alpha \le 1$ by R.~Natsui (2004). Then, for each $0 < \alpha < \tfrac{1}{2}
Externí odkaz:
http://arxiv.org/abs/2405.10921
We revisit Ito's (\cite{I1989}) natural extension of the Farey tent map, which generates all regular continued fraction convergents and mediants of a given irrational. With a slight shift in perspective on the order in which these convergents and med
Externí odkaz:
http://arxiv.org/abs/2312.13988
Autor:
Kraaikamp, Cor, Langeveld, Niels
Recently a new class of continued fraction algorithms, the $(N,\alpha$)-expansions, was introduced for each $N\in\mathbb{N}$, $N\geq 2$ and $\alpha \in (0,\sqrt{N}-1]$. Each of these continued fraction algorithms has only finitely many possible digit
Externí odkaz:
http://arxiv.org/abs/2310.16585
Autor:
Nölke, J. D., Solanki, S. K., Hirzberger, J., Peter, H., Chitta, L. P., Kahil, F., Valori, G., Wiegelmann, T., Suárez, D. Orozco, Albert, K., Jorge, N. Albelo, Appourchaux, T., Alvarez-Herrero, A., Rodríguez, J. Blanco, Gandorfer, A., Germerott, D., Guerrero, L., Gutierrez-Marques, P., Kolleck, M., Iniesta, J. C. del Toro, Volkmer, R., Woch, J., Fiethe, B., Cama, J. M. Gómez, Pérez-Grande, I., Kilders, E. Sanchis, Jiménez, M. Balaguer, Rubio, L. R. Bellot, Calchetti, D., Carmona, M., Deutsch, W., Feller, A., Fernandez-Rico, G., Fernández-Medina, A., Parejo, P. García, Blesa, J. L. Gasent, Gizon, L., Grauf, B., Heerlein, K., Korpi-Lagg, A., Lange, T., Jiménez, A. López, Maue, T., Meller, R., Vacas, A. Moreno, Müller, R., Nakai, E., Schmidt, W., Schou, J., Schühle, U., Sinjan, J., Staub, J., Strecker, H., Torralbo, I., Berghmans, D., Kraaikamp, E., Rodriguez, L., Verbeeck, C., Zhukov, A. N., Auchere, F., Buchlin, E., Parenti, S., Janvier, M., Barczynski, K., Harra, L., Schwanitz, C., Cuadrado, R. Aznar, Mandal, S., Teriaca, L., Long, D., Smith, P.
Publikováno v:
A&A 678, A196 (2023)
Extreme ultraviolet (EUV) observations of the quiet solar atmosphere reveal extended regions of weak emission compared to the ambient quiescent corona. The magnetic nature of these coronal features is not well understood. We study the magnetic proper
Externí odkaz:
http://arxiv.org/abs/2309.09789
Autor:
Mandal, Sudip, Peter, Hardi, Chitta, Lakshmi Pradeep, Solanki, Sami K., Cuadrado, Regina Aznar, Schühle, Udo, Teriaca, Luca, Sykora, Juan Martínez, Berghmans, David, Auchère, Frédéric, Parenti, Susanna, Zhukov, Andrei N., Buchlin, Éric, Verbeeck, Cis, Kraaikamp, Emil, Rodriguez, Luciano, Long, David M., Barczynski, Krzysztof, Pelouze, Gabriel, Smith, Philip J.
Publikováno v:
A&A 678, L5 (2023)
Dynamic fibrils (DFs) are commonly observed chromospheric features in solar active regions. Recent observations from the Extreme Ultraviolet Imager (EUI) aboard the Solar Orbiter have revealed unambiguous signatures of DFs at the coronal base, in ext
Externí odkaz:
http://arxiv.org/abs/2309.05101
Autor:
Chitta, L. P., Zhukov, A. N., Berghmans, D., Peter, H., Parenti, S., Mandal, S., Cuadrado, R. Aznar, Schühle, U., Teriaca, L., Auchère, F., Barczynski, K., Buchlin, É., Harra, L., Kraaikamp, E., Long, D. M., Rodriguez, L., Schwanitz, C., Smith, P. J., Verbeeck, C., Seaton, D. B.
Publikováno v:
Science 381, 867-872 (2023)
Coronal holes are areas on the Sun with open magnetic field lines. They are a source region of the solar wind, but how the wind emerges from coronal holes is not known. We observed a coronal hole using the Extreme Ultraviolet Imager on the Solar Orbi
Externí odkaz:
http://arxiv.org/abs/2308.13044
Autor:
Gorman, J., Chitta, L. P., Peter, H., Berghmans, D., Auchère, F., Cuadrado, R. Aznar, Teriaca, L., Solanki, S. K., Verbeeck, C., Kraaikamp, E., Stegen, K., Gissot, S.
Publikováno v:
A&A 678, A188 (2023)
Within the quiet Sun corona imaged at 1 MK, much of the field of view consists of diffuse emission that appears to lack the spatial structuring that is so evident in coronal loops or bright points. We seek to determine if these diffuse regions are ca
Externí odkaz:
http://arxiv.org/abs/2308.01640
Autor:
Gissot, S., Auchère, F., Berghmans, D., Giordanengo, B., BenMoussa, A., Rebellato, J., Harra, L., Long, D., Rochus, P., Schühle, U., Cuadrado, R. Aznar, Delmotte, F., Dumesnil, C., Gottwald, A., Halain, J. -P., Heerlein, K., Hellin, M. -L., Hermans, A., Jacques, L., Kraaikamp, E., Mercier, R., Smith, P. J., Teriaca, L., Verbeeck, C.
The $\textrm{HRI}_\textrm{EUV}$ telescope was calibrated on ground at the Physikalisch-Technische Bundesanstalt (PTB), Germany's national metrology institute, using the Metrology Light Source (MLS) synchrotron in April 2017 during the calibration cam
Externí odkaz:
http://arxiv.org/abs/2307.14182
Autor:
Janvier, M., Mzerguat, S., Young, P. R., Buchlin, É., Manou, A., Pelouze, G., Long, D. M., Green, L., Warmuth, A., Schuller, F., Démoulin, P., Calchetti, D., Kahil, F., Rubio, L. Bellot, Parenti, S., Baccar, S., Barczynski, K., Harra, L. K., Hayes, L. A., Thompson, W. T., Müller, D., Baker, D., Yardley, S., Berghmans, D., Verbeeck, C., Smith, P. J., Peter, H., Cuadrado, R. Aznar, Musset, S., Brooks, D. H., Rodriguez, L., Auchère, F., Carlsson, M., Fludra, A., Hassler, D., Williams, D., Caldwell, M., Fredvik, T., Giunta, A., Grundy, T., Guest, S., Kraaikamp, E., Leeks, S., Plowman, J., Schmutz, W., Schühle, U., Sidher, S. D., Teriaca, L., Solanki, S. K., Iniesta, J. C. del Toro, Woch, J., Gandorfer, A., Hirzberger, J., Suarez, D. Orozco, Appourchaux, T., Valori, G., Sinjan, J., Albert, K., Volkmer, R.
Publikováno v:
A&A 677, A130 (2023)
The Solar Orbiter mission completed its first remote-sensing observation windows in the spring of 2022. On 2/4/2022, an M-class flare followed by a filament eruption was seen both by the instruments on board the mission and from several observatories
Externí odkaz:
http://arxiv.org/abs/2307.02396